87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
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/*
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* Copyright (c) 2008, Google Inc.
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* All rights reserved.
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*
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* Copyright (c) 2009-2011, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google, Inc. nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <reg.h>
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#include <debug.h>
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#include <kernel/thread.h>
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#include <platform/debug.h>
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#include <platform/iomap.h>
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#include <smem.h>
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#include <qgic.h>
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static uint32_t ticks_per_sec = 0;
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extern void platform_uninit_timer(void);
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void platform_init_timer();
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void platform_early_init(void)
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{
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uint8_t cfg_bid = 0x1;
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uint8_t cfg_pid = 0x1;
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uint8_t gsbi_id = target_uart_gsbi();
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uart_dm_init(gsbi_id, GSBI_BASE(gsbi_id), GSBI_UART_DM_BASE(gsbi_id));
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/* Timers - QGIC Config */
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writel((cfg_bid << 7 | cfg_pid << 10), APCS_GLB_QGIC_CFG);
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qgic_init();
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platform_init_timer();
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}
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void platform_init(void)
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{
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dprintf(INFO, "platform_init()\n");
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acpu_clock_init();
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}
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void platform_uninit(void)
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{
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platform_uninit_timer();
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}
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/* Initialize DGT timer */
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void platform_init_timer(void)
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{
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/* disable timer */
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writel(0, DGT_ENABLE);
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ticks_per_sec = 19200000; /* Uses CXO (19.2 MHz) */
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}
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/* Returns timer ticks per sec */
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uint32_t platform_tick_rate(void)
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{
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return ticks_per_sec;
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}
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